A dietary protein is considered "complete" when it ______.

Question

Quizplus · Accepted Answer

A dietary protein is considered complete when it contains all essential amino acids. Essential amino acids are the ones that cannot be produced by the body and must be obtained from food sources. Plant-based proteins can be complete or incomplete depending on the types and amounts of essential amino acids they contain. Therefore, B is not the correct answer. Nonessential amino acids can be produced by the body, so A is not the correct answer either. Branched-chain amino acids are a type of essential amino acid, but not all complete proteins necessarily contain them, so D is not the correct answer.

A Dietary Protein Is Considered "Complete" When It ______